/Engine/Plugins/Experimental/AVCodecs/AVCodecsCore/Source/AVCodecsCore/Public/Video/CodecUtils/CodecUtilsH265.h
Easy to understand user facing profiles from the T-Rec-H.264-201304 spec there is another enum in CodecUtilsH265 that aligns the profiles with PIC and constraints however users are not expected to understand those ones.
enum EH265Profile { Auto, Main, Main10, Main10StillPicture, MainStillPicture, Monochrome, Monochrome10, Monochrome12, Monochrome16, Main12, Main422_10, Main422_12, Main444, Main444_10, Main444_12, MainIntra, Main10Intra, Main12Intra, Main422_10Intra, Main422_12Intra, Main444_Intra, Main444_10Intra, Main444_12Intra, Main444_16Intra, Main444StillPicture, Main444_16StillPicture, HighThroughput444, HighThroughput444_10, HighThroughput444_14, HighThroughput444_16Intra, ScreenExtendedMain, ScreenExtendedMain10, ScreenExtendedMain444, ScreenExtendedMain444_10, ScreenExtendedHighThroughput444, ScreenExtendedHighThroughput444_10, ScreenExtendedHighThroughput444_14, MAX, }